<!DOCTYPE html>
<html>
	<head>
		<meta charset="utf-8" />
		<title>盒子模型:外边距</title>
		<style>
.box{
	width:200px;
	height: 300px;
	border: 1pxsolid  red;
	margin-top:100px ;
	margin-left: 100px;
	margin-right: 100px;
	margin-bottom: 100px;
	margin: 10px 20px 30px ;
	margin: 100px  auto 80px;
}
.box2{
	width: 200px;
	height:300px;
	border: 1px solid blue;
	margin:100px auto 0 ;
}
.wbox{
	width: 200PX;
	height: 300PX;
	background-color: hotpink;
}
.Nbox{
	width: 100PX;
		height: 100PX;
		background-color: hotpink;
	}
}
</style>
	</head>
	<body>
		<div class="box">hell box!</div>
		<div class="box2">hell box2!</div>
		<div class ="wbox">
			<div class="Nbox"></div>
			
	</body>
</html>
